Emergency-brake for motor-vehicles.



A. D. MORGAN. EMERGENCY BRAKE FOR MOTOR'VEHIGLES.

APPIJIOATION FILED FEB. l. 1907.

Wm- ESEEE:

PATENTED JAN. 14, 1908.

an emergency brake for a vehicle, and es when necessary, as for example,when owing to the conditlon of the road-way, brakes of partly in sectionof a motor vehicle applied certain and positive in action, and by whichALEXANDER D. MORGAN-OI WEST ROXBURY, MASSACHUSETTS.

EMERGENCY-BRAKE FOR MOTOR-VEHICLES.

Specification of Letters Patent.

I Patented Jan. 14, 1908.

Application filed February 1, 1907 Serial No. 355.226.

To all whom "it may concern:

Be it knownthat I, ALEXANDER D. Mon- GAN, a citizen of the UnitedStates, and a resident of West lioxbury, in the county of Suffolk andState of Massachusetts, have invented a new and useful Improvement inEmergency-Brakes for Motor-Vehicles, of which the following is aspecification.

My invention relates to brakes for vehicles, and especially to emergencybrakes for motor vehicles.

The object of my invention is to produce pecially for a motor vehicle,which shall be the vehicle may be almost instantly stopped the ordinarytype are not effective.

My invention will be described in connection with the drawings whichaccompany and form a part of this specification and which illustratesone embodiment thereof; although it will be understood by those skilledin the art that many modifications may be made in the particularembodiment which I shall specifically describe for the purpose of morefully disclosing my invention, without departing from the principlethereof.

In the drawings Figure 1 is an, elevation with my emergencybrake. Fig. 2is a plan view of the motor vehicle shown in Fig. 1 with the vehicle bedremoved. Fig- 3 is a plan view of a detail of construction, and Fig. 4is an end elevation thereof.

In the figures, 1, 2, represent the wheels of a motor vehicle secured inthe usual manner to the axles] The frame 7 7 is pivotally secured tosome suitable portion of the vehicle and as herein shown is pivotallysccured to the casing 4 of the rear axle in the bearings 5 5, the bosses6 6 in which the two members of said frame terminate embracing saidcasing 4. The rack or drag t) is pivotally secured by a substantiallyvertically arranged bolt or pin 11, or other suitable means to the endportion 9 of the aforesaid frame and may as shown be pro vided with aseries of teeth 12 detachably secured therein by means of nuts and locknuts 20, 20, so that if desired, said teeth may be withdrawn up into thebody of the drag 9 or else removed therefrom. In order to ma ntain thedrag normally parallel to the rear axle of the vehicle the springs 19,19, having their ends secured to the drag and to the end of the frame 9,are provided. Thesprings 19 having their ends secured to the body of thevehicle and to the members 7 7 of the frame, normally maintain thelatter in elevated position as shown. A lever 16 is pivoted at 15 to asuitable portion of the ve- ,hicle, as for example the depending lug 18,

and is operatively connected With the frame 7 7 by means of theconnecting rod 13 pivoted at 14 to said lever and at 8 to a lugpreferably formed integral with they member 7 of the frame.

As will be obvious, the forward movement of the lever 16 will lower theframe and cause the brake 9 to come in contact with the road-way so asto retard the speed of the vehicle.

The chiefuse of the invention hereinbefore described is to prevent amotor vehicle, traveling at rapid speed, from skidding when the usualbrakes are applied in the usual manner and the condition of the road-waywill not permit such application of the brakes to bring the vehicle to afull stop, as

for exam ple when the course of the vehicle is suddenly changed. Underthese conditions, as will be obvious, as soon as the drag is broughtinto contact with the earth the pivotal connection of said drag with theend of the frame '9 will enable the drag to assume a positionsubstantially at ri ht angles to the direction of the motion 0 the rearpart of the vehicle, thereby greatly increasing the effectiveness of theemergency brake in quickly stopping the progress of the vehicle. As soonas the progress of the vehicle is stopped, the action of the spring 19will bring the frame to its normal position and the action of thesprings 19 will cause the drag to resume its normal position withrespect to the end of the frame 9. I

I claim:

1. The combination with a vehicle, of an emergency brake comprising aframe pivotally attached to said vehicle, a drag pivotally attached tosaid frame by a substantially vertically arranged pin and maintainedsubstantially parallel to the rear axle of said vehicle, and means underthe control of the driver for lowering said frame whereby said drag isbrought into contact with the road-way over which said vehicle istraveling.

2. The combination with a vehicle, of an ,tained substantially para] ofsaid through said'drag, means ally attached to said vehicle, a dragattached to said pivotally frame by a substantially vertically arrangedpin and maintained substantially .parallel to the rear axle of saidvehicle, means under the control of the driver for lowering said framewhereby said drag is brou ht into contact with the road-way over whichsaid vehicle is traveling, and means for automaticallyreturning saidframe to its normal position. 1

3.; The combination with a vehicle, of an emergency brake comprising aframe. pivotally attached to' said vehicle, a drag pivotall attached tosaid frame by a, substantia y securing said teeth in position, and meansunder control of the driver for lowering said 'otally attached to said 1taming said drag 'brou ht into contact with the roadway o verframewhereby said drag is brought into contact with the road-way overwhich said vehicle is traveling.

5. Th emergency brake comprising a frame pivvehicle, a drag pivframe,,means mainin a position substantially parallel to the rear axle ofsaid-vehicle, and means under the, controlofthe/ driver for loweringsaid frame whereby said drag is otally attached to said whic saidvehicle traveling.

ht into contact with the of teeth passin e'combination with a vehicle,of any .emergency brake comprising a 7 6. The combination with avehicle, of. an

frame pivotally attached to said vehic movement ina substantiallyhorizontal plane when said frame is lowered, means maintaining said dragsubstantially parallel to the rear axle of said vehicle and means undercontrol of the d ver for lowering said frame and thereby bringing saiddrag in contact with the roadway over which saidvehicle is traveling. I

7f-The combination with a vehicle, of an emergency brake comprisin aframe pivotally attached to said vehicle, a' drag associated with saidframe and arranged to assume 'a angles to the direction of motion of therear part of said vehicle when brought into contact with the roadwayover which said vehicle is traveling, and means under the control of thedriver for lowering said frame whereby said drag is brought into contactwith said roadway.

8. The combination with a vehicle, of an emergency'brake comprising aframe capableof vertical movement vehicle, a dra respect to sai withrespect'to said frame and motion of the rear part of said vehicle, andmeans under the control of the driver for loweringsaid frame and therebybringing said drag into contact with the roadway over which said vehicleis traveling.

In testimony whereof, Ihave hereunto sub- ALEXANDER D. MORGAN.Witnesses: I

GHARLEs C. READ, GEO. K. WOODWQRTH.

scribed my namev this 29th day of J anuary' 4 a drag asso' .ciated withsaid frame andso constructed I and arranged as to be. capable ofrotational position substantially at right horizontally' rotatable withmaintained substantially at right angles to the direction of

